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Equipment Discussions >> Eyepieces

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fishook
member


Reged: 08/27/10

Coulter Optical Questions new
      #5532548 - 11/21/12 03:59 PM

Hi All,
Does anyone know (have any pics) what variety of sizes Coulter Optical offered for Ortho's?
Dan


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ji4m
member
*****

Reged: 12/29/10

Re: Coulter Optical Questions new [Re: fishook]
      #5532761 - 11/21/12 06:18 PM

I can only speak for the two I bought - 12.5mm and 25mm. They are volcano top, and do not say Coulter on them. They came in a light gray box with white bottom. I still have them, so I can offer up a photo later if no one else comes forward. They have the ubiquitous ortho appearance, so no surprises in these I own.

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Sarkikos
Postmaster
*****

Reged: 12/18/07

Loc: Suburban Maryland, USA
Re: Coulter Optical Questions new [Re: ji4m]
      #5532873 - 11/21/12 07:50 PM Attachment (31 downloads)

I had a Coulter ortho 6mm which I recently sold. Here are some pics:

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Sarkikos
Postmaster
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Reged: 12/18/07

Loc: Suburban Maryland, USA
Re: Coulter Optical Questions new [Re: Sarkikos]
      #5532876 - 11/21/12 07:51 PM Attachment (20 downloads)

.

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Mariner@sg
sage
*****

Reged: 06/28/12

Loc: Little Red Dot
Re: Coulter Optical Questions new [Re: Sarkikos]
      #5532931 - 11/21/12 08:42 PM

I think they're in the same range available as Circle T orthos since it's from the same manufacturer.

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mgwhittle
Pooh-Bah
*****

Reged: 08/24/11

Loc: Chattanooga, TN
Re: Coulter Optical Questions [Re: Mariner@sg]
      #5533281 - 11/22/12 01:50 AM

I am pretty sure the one being shown is not a circle T. I say this based on the construction of the eye lens opening, the type of letters stamped Japan and the finish. I believe it's missing a sticker that would have been applied to the side of the upper barrel that had the makers mark symbol of a what I can only describe as an 8 with two lines going through it.

On the other hand, I could be wrong.......


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catboat
sage
*****

Reged: 12/01/09

Loc: Maine
Re: Coulter Optical Questions new [Re: mgwhittle]
      #5533311 - 11/22/12 02:30 AM

Here's a link to a CN classified that shows the sticker Mark mentioned. If you "supersize" the linked photo on the left and then magnify, you can see the sticker fairly well on the Kellner: a crosshair+ superimposed on an 8.

link to Coulter sticker



Edited by catboat (11/22/12 02:34 AM)


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mgwhittle
Pooh-Bah
*****

Reged: 08/24/11

Loc: Chattanooga, TN
Re: Coulter Optical Questions new [Re: catboat]
      #5533316 - 11/22/12 02:34 AM

Yep Edward, you are right, it's not one of those weird figure 8 orthos. But I am still suspect that the pictured one is not a circle T. But like I said I could be wrong....

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catboat
sage
*****

Reged: 12/01/09

Loc: Maine
Re: Coulter Optical Questions new [Re: mgwhittle]
      #5533324 - 11/22/12 02:54 AM

Mark, I think the one shown in this thread by Sarkikos is the same as you mention -- just missing the sticker with the "8" mark.

But the overall build resembles Circle-T products. In the CN link I posted above, the Coulter kellner (not the ortho, my mistake) has the incised line around the lens housing, which, I think, is also typical of UO Circle-T kellners -- altho I don't have an example on hand. So I'm on the fence about whether or not these are Circle-Ts.

Any comments on how the Coulters perform vs. other Japanese volcano tops?

Edited by catboat (11/22/12 02:56 AM)


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Mariner@sg
sage
*****

Reged: 06/28/12

Loc: Little Red Dot
Re: Coulter Optical Questions new [Re: catboat]
      #5533606 - 11/22/12 09:36 AM

My take is the make of the EP and the engraving is the same as the Circle-T orthos. The stickers may be missing for these early production pieces, which are usually stamped with JAPAN and a small circle-t insignia (Stamping is not perfect, some portions end up so shallow you can hardly see them).

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Sarkikos
Postmaster
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Reged: 12/18/07

Loc: Suburban Maryland, USA
Re: Coulter Optical Questions new [Re: Mariner@sg]
      #5534269 - 11/22/12 05:57 PM

As a matter of course, I take all stickers off of my eyepieces. I don't want any chance of one coming loose and gumming up the optics. It's very dewy where I observe, so that could happen. I actually look through my eyepieces, not just look at'em.

What were those manufacturers thinking? Never put stickers on optics!


Mike


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moynihan
Carpal Tunnel


Reged: 07/22/03

Loc: Lake Michigan Watershed
Re: Coulter Optical Questions new [Re: Sarkikos]
      #5535562 - 11/23/12 01:50 PM

I just went and grabbed my 12.5mm Coulter Ortho i bought long ago, (when i bought my original design Coulter Odyssey 10.1 f/4.5, new...)
On the silver metallic barrel, it clearly says JAPAN then a circle with a T in it. I would not be surprised if they had different makers through the year.
BTW: A good standard ortho, same view as my U.O. volcano top 12.5mm.


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Mike Lynch
sage
*****

Reged: 04/07/06

Re: Coulter Optical Questions new [Re: moynihan]
      #5538503 - 11/25/12 10:39 AM

Regarding that 6mm Coulter ortho mentioned above, I was the buyer of the one sold by Sarkikos, and I was out for a short time last night with my 127mm f/5.5 homemade refractor looking at Jupiter through it. Clearly (pun there), this was the best of all the eyepieces I tried on Jupiter.

The scope is fast, and I use it typically for deep-sky viewing. So I had a fringe-killer filter, a Baader Moon and Skyglow filter and a stop-down mask to get my best views. Had to let the scope cool down for a while, too. The major belts showed some detail and the Great Tan Spot was easily visible at 116x.

A more 'planetary' scope I'm sure would have done even better.

Mike Lynch
Frankfort KY USA


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